Eduaed ulleich



UNITED STATES PATENT OFFICE.

EDUARD ULLRIOH, OF HOGHST-ON-THE-MAIN, GERMANY, ASSIGNOR TO THE FARBWERKE, VORMALS MEISTER, LUOIUS & BRUNING, OF SAME PLACE.

NITROSOPHENYL-BLUE DYE-STUFF.

SPECIFICATION forming part of Letters Patent No. 364,320, dated June '7, 1887.

Application filed February $11, 1887. ..e1ial No. 228,365. (No specimens.)

To all whom, it may concern.-

Be it known that I, EDUARD ULLRIOH, doctor of philosophy, a citizen of the Empire of Germany, residing at Htichst-on-thelllain, in the Empire of Germany, have invented certain new and useful Improvements in Blue 001- oring Matter from Paranitroso Phenyltolylamine; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and the same with alcoholic hydrochloric acid. To five parts of the chlorhydrate of paranitrosophenyltolylamine and eight parts of gallic acid are added fifty parts of acetic acid (of twenty per cent.) and heated on a water-bath until the mass has taken a blue color. N ow the product is poured into cold water, the blue coloring-matter, which has separated, filtered off, and washed with water.

The coloring-matter is in form of a dark-- blue paste. It is insoluble in cold water and ditficultly soluble in hot water. In dyeing as well as in printing. it is fixed on the fiber by means of chronic or iron mordants under addition of acetate of lime. 1t dyes a greenish-blue shade, whereas the coloring-matter obtained from paranitrosodiphenylamine, which is the subject of a former application for Letters Patent, dyes a more reddish-blue shade.

What I claim as new, and desire to secure by Letters Patent, is

As a new manufacture, the blue coloringmatter or dye-stuff prepared by the action of paranitrosophenyltolylamine upon phenols or oxycarbonic acids, as described, havingthe properties herein set forth.

In testimony whereof Iaffix my signature in presence of two witnesses.

EDUARD ULLRIGH.

Witnesses:

ALvnsTo S. Hoeun, JEAN GRUND. 

